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1. 发明申请

US20170131164A1 METHOD FOR ESTIMATING IN REAL TIME THE FORCE ON THE TIE-RODS WITHIN A POWER STEERING MECHANISM 审中-公开
公开(公告)号：US20170131164A1
公开(公告)日：2017-05-11
申请号：US15320085
申请日：2015-06-19
申请人： JTEKT EUROPE
发明人： Sébastien BOURDREZ , Pascal MOULAIRE , Christophe RAVIER
IPC分类号： G01L5/22
CPC分类号： G01L5/221 , B62D6/008
摘要： A method determines a link force within a power-steering mechanism of a vehicle, the method including a step (a) of determining an actuation force, which involves determining the actuation force that results from the assistance force exerted by the assistance motor and the driver force exerted by the driver of the vehicle on the steering mechanism; a step (b) of assessing dry friction; and a step (c) of calculating the link force, which has a summation sub-step which involves calculating an expression representing the link force, which uses the algebraic sum of the actuation force and the dry friction force, and a filtering sub-step which involves applying a low-pass filter in order to smooth the result of the expression when the expression is calculated upon a steering reversal of the steering mechanism.

2. 发明申请

US20160221605A1 METHOD FOR CALCULATING, IN REAL TIME, THE ABSOLUTE POSITION OF A POWER STEERING MEMBER WITH IMPROVED ACCURACY 审中-公开
标题翻译：实时计算具有改进精度的动力转向构件的绝对位置的方法
公开(公告)号：US20160221605A1
公开(公告)日：2016-08-04
申请号：US14917918
申请日：2014-09-01
申请人： JTEKT EUROPE
发明人： Romaric PREGNIARD , Loïc BASTIEN , Christophe RAVIER , Sébastien BOURDREZ
IPC分类号： B62D15/02 , G01L3/04 , B62D3/12
CPC分类号： B62D15/0235 , B62D3/12 , B62D15/021 , B62D15/0245 , G01L3/04
摘要： The present invention concerns a method for determining the position of a movable steering member (1, 2, 3) belonging to a steering mechanism (4) of a vehicle that comprises at least a first movable member (1), such as a shaft (1) of an assistance motor (M), and a second movable member (2), such as a rack (2), which cooperate with each other by means of at least one first link (L1), said method comprising a step (a) that involves measuring the position (θ1) of the first member (1), then a step (b) that involves calculating the instantaneous position (θ2) of the second member (2) from said position of the first member (θ1), and a correction step (d) during which the calculation of the position (θ2) of the second member (2) is adapted, taking into consideration the offset (δνυ) in the position of the second member (2) that results from the elastic deformation of the first link (L1) under the force (C1) transmitted by the latter.
摘要翻译：本发明涉及一种用于确定属于车辆的转向机构（4）的可移动转向构件（1,2,3）的位置的方法，该方法包括至少第一可移动构件（1），诸如轴（ 1）和辅助电动机（M）的第一可移动部件（2），以及通过至少一个第一连杆（L1）彼此协作的诸如齿条（2）的第二可移动部件（2），所述方法包括步骤 a）涉及测量第一构件（1）的位置（θ1），然后是包括从第一构件（θ1）的所述位置计算第二构件（2）的瞬时位置（θ2）的步骤（b）并且考虑到由第二构件（2）产生的第二构件（2）的位置的偏移（δνυ），适于考虑第二构件（2）的位置（θ2）的计算的校正步骤（d）第一连杆（L1）在由后者传递的力（C1）下的弹性变形。

3. 发明申请

US20170023445A1 MODELLING OF THE FRICITON IN A POWER STEERING USING A SCATTER OF POINTS 审中-公开
标题翻译：使用点阵的动力转向中的FRICITON的建模
公开(公告)号：US20170023445A1
公开(公告)日：2017-01-26
申请号：US15124260
申请日：2015-03-09
申请人： JTEKT EUROPE
发明人： Sébastien BOURDREZ , Pascal MOULAIRE , Christophe RAVIER
IPC分类号： G01M17/06 , G01L3/22 , B62D5/04 , G01L5/22
CPC分类号： G01M17/06 , B62D5/0463 , B62D5/0481 , G01L3/22 , G01L5/22
摘要： A method for evaluating the frictions in a power steering mechanism, the method including a step of acquiring a series of characterization points, during which are measured, for several different values taken successively by the assistance force during the operation of the steering mechanism, the corresponding friction values, so as to empirically obtain a series of distinct characterization points each associating a measured friction value to a measured value representative of the assistance force, then a step of constructing an empirical friction model, during which a correlation law is established between the characterization points constitutive of the series of characterization points, from the scatter chart formed by the series of the characterization points.
摘要翻译：一种用于评估动力转向机构中的摩擦的方法，所述方法包括获取在转向机构的操作期间由辅助力连续获取的若干不同值的一系列特征点的步骤，对应的摩擦值，以经验获得一系列不同的特征点，每个特征点将测量的摩擦值与代表辅助力的测量值相关联，然后构建经验摩擦模型的步骤，在该步骤期间，在表征之间建立相关定律点构成了一系列特征点，从分散图形成的一系列特征点。

4. 发明申请

US20170015349A1 FILTERING METHOD FOR THE DETECTION OF THE TRANSITIONS OF A POWER STEERING SIGNAL 审中-公开
标题翻译：用于检测功率转向信号转换的滤波方法
公开(公告)号：US20170015349A1
公开(公告)日：2017-01-19
申请号：US15123812
申请日：2015-02-27
申请人： JTEKT EUROPE
发明人： Sébastien BOURDREZ , Pascal MOULAIRE , Christophe RAVIER
IPC分类号： B62D5/04
CPC分类号： B62D5/0481 , B62D5/0463
摘要： The invention concerns a method for detecting a transition (4′) in a noisy signal, which involves submitting a noisy signal (δSignal) carrying an item of information used for managing the power steering, said method comprising a derivation sub-step (a1), which involves evaluating the time derivative of the noisy signal (δSignal/δt), following by a selective filtering sub-step (a2) which involves comparing said time derivative of the noisy signal (δSignal/δt) with a predefined variation threshold (Spic) in order to detect the appearance of a derivative peak (7), greater than said variation threshold (Spic), evaluating the holding time (dpic) of said derivative peak, during which the time derivative of the noisy signal (δSignal/δt) is held above said variation threshold (Spic), and checking if said peak holding time (Spic) reaches or exceeds a predefined minimum time threshold (d0).
摘要翻译：本发明涉及一种用于检测噪声信号中的转换（4'）的方法，其涉及提交携带用于管理功率转向的信息项的噪声信号（δSignal），所述方法包括导出子步骤（a1），其涉及通过选择性滤波子步骤（a2）来评估噪声信号（δSignal/δt）的时间导数，其包括将噪声信号（δSignal/δt）的所述时间导数与预定义的变化阈值（Spic ），以检测大于所述变化阈值（Spic）的衍生峰值（7）的出现，评估所述导数峰值的保持时间（dpic），在此期间噪声信号的时间导数（δSignal/δt）被保持在所述变化阈值（Spic）之上，并且检查所述峰值保持时间（Spic）是否达到或超过预定义的最小时间阈值（d0）。

5. 发明申请

US20210164869A1 USE OF AN ASSIST MOTOR OF A POWER STEERING SYSTEM TO GENERATE TEST CYCLES ACCORDING TO A VIBRATION ASCERTAINING CYCLE 有权
公开(公告)号：US20210164869A1
公开(公告)日：2021-06-03
申请号：US16770726
申请日：2018-12-03
申请人： JTEKT EUROPE
发明人： Matthieu LOUSSAUT , Christophe RAVIER
IPC分类号： G01M17/06
摘要： A method for a power steering system for empirically determining at least one property of the system, power steering system including at least one steering wheel, a steering mechanism provided with a rack, and at least one assist motor, method having, outside a steering phase during which the power steering system is assigned to the driving of a vehicle in order to cause vehicle to follow a trajectory which is determined as a function of the situation of vehicle with respect to its environment, a step (a) of automatically activating the assist motor, during which step a computer is used to automatically generate and apply to the assist motor; at least one indicator parameter which is specific to the response by the powersteering system to the automatic activation of the assist motor and which is characteristic of the desired property.

6. 发明申请

US20170320517A1 UNDERSTEER AND OVERSTEER DETECTOR FOR A MOTOR VEHICLE 审中-公开
公开(公告)号：US20170320517A1
公开(公告)日：2017-11-09
申请号：US15531138
申请日：2015-11-16
申请人： JTEKT EUROPE
发明人： André MICHELIS , Christophe RAVIER , Pascal MOULAIRE
IPC分类号： B62D6/00
CPC分类号： B62D6/003 , B60W30/02 , B60W40/00 , B60W40/068
摘要： A method for detecting a situation of loss of grip of a vehicle provided with a steering system operated by a steering wheel, said method being in that it comprises a step (a) of evaluating a first indicator of loss of grip (P1) comprising calculating, as the first indicator of loss of grip (P1), the partial derivative ( P   1 = ∂ ψ . ∂ α ) , relative to a variable (α) representative of the angular position of the steering wheel, of a driving parameter which is representative of the yaw rate ({dot over (ψ)}) of the vehicle.

7. 发明申请

US20170144698A1 ESTIMATION OF THE AGEING OF A POWER STEERING 审中-公开
公开(公告)号：US20170144698A1
公开(公告)日：2017-05-25
申请号：US15129858
申请日：2015-04-07
申请人： JTEKT EUROPE
发明人： Sébastien BOURDREZ , Pascal MOULAIRE , Romaric PREGNIARD , Christophe RAVIER
IPC分类号： B62D5/04 , G07C5/08
CPC分类号： B62D5/0481 , G07C5/0808
摘要： A method for estimating the ageing of a steering mechanism during which the ageing of the steering mechanism is assessed by calculating a value called > according to an ageing function (old, old2, ene) which corresponds to the integral, over time, of an expression which is weighted by a stress indicator (Tm(u), Ts(u)) the value of which at each considered instant (u) is representative of the intensity of a stress force (Tm, Ts), such as the operating force exerted by the assist motor, which is undergone by the steering mechanism at the considered instant.

8. 发明申请

US20200277005A1 USE OF AN ASSIST MOTOR OF A POWER STEERING SYSTEM TO GENERATE TEST CYCLES ACCORDING TO A POSITION ASCERTAINING CYCLE 审中-公开
公开(公告)号：US20200277005A1
公开(公告)日：2020-09-03
申请号：US16764266
申请日：2018-12-03
申请人： JTEKT EUROPE
发明人： Matthieu LOUSSAUT , Christophe RAVIER
IPC分类号： B62D5/04 , B62D15/02
摘要： A method for a power steering system for empirically determining at least one property of the system including at least one steering wheel, a steering mechanism with a rack, and at least one assist motor, the method including, outside a steering phase during which the power steering system is assigned to drive a vehicle to follow a trajectory determined as a situation function of the vehicle with respect to its environment, a step (a) of automatically activating the assist motor, during which a computer automatically generates and applies to the assistance motor, without requiring action on the steering wheel, an activation instruction following one or more pre-established exploration cycles for measuring, during or at the end of the at least one exploration cycle, at least one indicator parameter is specific to the power steering system response to the automatic activation of the assist motor and is a desired property characteristic.

9. 发明申请

US20170015350A1 DETECTION METHOD OF A STEERING REVERSAL BY MONITORING OF THE TORQUE PROVIDED BY A STEERING ASSIST MOTOR AND APPLICATION OF SAID METHOD FOR EVALUATING THE FRICTION 审中-公开
标题翻译：通过监视由转向器辅助电机提供的扭矩反向转向的检测方法和用于评估摩擦的方法
公开(公告)号：US20170015350A1
公开(公告)日：2017-01-19
申请号：US15123914
申请日：2015-02-27
申请人： JTEKT EUROPE
发明人： Sébastien BOURDREZ , Pascal MOULAIRE , Christophe RAVIER
IPC分类号： B62D5/04
CPC分类号： B62D6/10 , B62D5/0463 , B62D5/0481 , B62D6/08
摘要： A method for managing a power steering system, including a step (a) of detecting a reversal in the steering direction which involves acquiring a signal, referred to as a “motor torque signal” (CMot), representative of the assistance force (Cassist) delivered by the power steering motor, then evaluating the time derivative (δCMot/δt) of the motor torque signal, then comparing the time derivative of the motor torque signal to a predefined variation threshold (Spic) in order to detect a derivative peak, greater than the variation threshold (Spic), that indicates a reversal in the steering direction. The method next includes a friction evaluation step (b) which involves evaluating the friction from the drop, during the reversal in the steering direction, in a so-called “actuation force signal” (Caction), which is representative of the total actuation force exerted together on the power steering by the driver and by the power steering motor.
摘要翻译：一种用于管理动力转向系统的方法，包括步骤（a），其检测涉及获取信号的转向方向上的反转，称为“马达转矩信号”（CMot），代表辅助力（Cassist）然后评估电动机转矩信号的时间导数（δCMot/δt），然后将电动机转矩信号的时间导数与预定义的变化阈值（Spic）进行比较，以便检测导数峰值，更大比变化阈值（Spic），其指示转向方向上的反转。该方法接下来包括摩擦评估步骤（b），其包括在所谓的“致动力信号”（Caction）中评估在转向方向的反转期间来自液滴的摩擦，其表示总致动力在驾驶员和动力转向电动机的动力转向上一起施加。

10. 发明申请

US20170008556A1 DETERMINATION OF AN ANGULAR REFERENCE POSITION OF A POWER STEERING SYSTEM FROM RISING AND FALLING EDGES OF AN INDEX SIGNAL 有权
标题翻译：动力转向系统的角度参考位置的确定由指数信号的上升和下降沿决定
公开(公告)号：US20170008556A1
公开(公告)日：2017-01-12
申请号：US15113392
申请日：2015-01-29
申请人： JTEKT EUROPE
发明人： Romaric PREGNIARD , Christophe RAVIER , Xavier PALANDRE
IPC分类号： B62D5/04 , B62D6/00
CPC分类号： B62D5/0481 , B62D6/00 , B62D15/0245
摘要： A method for determining an absolute power steering reference position, which includes: a step of acquiring a first edge position corresponding to a first edge of a first index pulse generated when the movable steering member passes an indexed position in a first movement direction; a step of acquiring a second edge position corresponding to a second edge of a second index pulse generated when the movable steering member passes the same indexed position in a second movement position opposite the first movement direction; and a step of calculating a reference position, during which an power steering reference position is calculated from an average of the first edge position and the second edge position.
摘要翻译：一种用于确定绝对动力转向基准位置的方法，包括：获取与当所述可移动转向构件沿第一移动方向通过分度位置时产生的第一指标脉冲的第一边缘相对应的第一边缘位置的步骤; 获取对应于当所述可移动转向构件在与所述第一移动方向相反的第二移动位置中通过相同的分度位置时产生的第二索引脉冲的第二边缘的第二边缘位置的步骤; 以及计算基准位置的步骤，在该步骤中，根据第一边缘位置和第二边缘位置的平均值来计算动力转向基准位置。

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